"backtrack" meaning in English

{
  "forms": [
    {
      "form": "backtrack",
      "tags": [
        "canonical"
      ]
    },
    {
      "form": "backtracks",
      "tags": [
        "third-person",
        "singular"
      ]
    },
    {
      "form": "backtracked",
      "tags": [
        "past"
      ]
    },
    {
      "form": "backtracked",
      "tags": [
        "past",
        "participle"
      ]
    },
    {
      "form": "backtracking",
      "tags": [
        "present",
        "participle"
      ]
    }
  ],
  "head_templates": [
    {
      "expansion": "[POS TABLE]",
      "name": "verb"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "verb",
  "senses": [
    {
      "examples": [
        {
          "text": "I dropped my sunglasses and had to backtrack to find them."
        }
      ],
      "glosses": [
        "If you backtrack, you retrace one's steps."
      ],
      "id": "simple-backtrack-en-verb-zISgs0Ou"
    },
    {
      "examples": [
        {
          "text": "If we backtrack through this problem, maybe we can figure out where we went wrong."
        }
      ],
      "glosses": [
        "If you backtrack, you repeat or review work that is already done."
      ],
      "id": "simple-backtrack-en-verb-s8m3-p-9"
    },
    {
      "categories": [
        {
          "kind": "other",
          "name": "Aviation",
          "parents": [],
          "source": "w"
        }
      ],
      "examples": [
        {
          "text": "Speedbird One: enter and backtrack Runway 27 Left."
        }
      ],
      "glosses": [
        "If a plane backtracks, it taxis down an active runway in the opposite direction to that being used for takeoff."
      ],
      "id": "simple-backtrack-en-verb-KryKmt9H",
      "raw_tags": [
        "aviation"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/ˈbæk.træk/"
    },
    {
      "audio": "en-us-backtrack.ogg",
      "raw_tags": [
        "Audio"
      ],
      "tags": [
        "US"
      ]
    }
  ],
  "word": "backtrack"
}

{
  "forms": [
    {
      "form": "backtrack",
      "tags": [
        "canonical"
      ]
    },
    {
      "form": "backtracks",
      "tags": [
        "third-person",
        "singular"
      ]
    },
    {
      "form": "backtracked",
      "tags": [
        "past"
      ]
    },
    {
      "form": "backtracked",
      "tags": [
        "past",
        "participle"
      ]
    },
    {
      "form": "backtracking",
      "tags": [
        "present",
        "participle"
      ]
    }
  ],
  "head_templates": [
    {
      "expansion": "[POS TABLE]",
      "name": "verb"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "verb",
  "senses": [
    {
      "examples": [
        {
          "text": "I dropped my sunglasses and had to backtrack to find them."
        }
      ],
      "glosses": [
        "If you backtrack, you retrace one's steps."
      ]
    },
    {
      "examples": [
        {
          "text": "If we backtrack through this problem, maybe we can figure out where we went wrong."
        }
      ],
      "glosses": [
        "If you backtrack, you repeat or review work that is already done."
      ]
    },
    {
      "categories": [
        "Aviation"
      ],
      "examples": [
        {
          "text": "Speedbird One: enter and backtrack Runway 27 Left."
        }
      ],
      "glosses": [
        "If a plane backtracks, it taxis down an active runway in the opposite direction to that being used for takeoff."
      ],
      "raw_tags": [
        "aviation"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/ˈbæk.træk/"
    },
    {
      "audio": "en-us-backtrack.ogg",
      "raw_tags": [
        "Audio"
      ],
      "tags": [
        "US"
      ]
    }
  ],
  "word": "backtrack"
}